Dependence of the nature of the Holstein polaron motion in a polynucleotide chain subjected to a constant electric field on the initial polaron state and the parameters of the chain

TL;DR

This study explores how the motion of a polaron in a polynucleotide chain under a constant electric field varies depending on initial charge distribution and chain parameters, revealing different movement modes.

Contribution

It demonstrates the dependence of polaron motion on initial charge distribution and chain parameters, highlighting conditions for uniform or oscillatory charge movement.

Findings

Charge movement can be uniform or oscillatory.

Motion depends on initial charge distribution.

Electric field strength influences motion mode.

Abstract

In this work, we consider the motion of a polaron in a polynucleotide Holstein molecular chain in a constant electric field. It is shown that the character of the polaron motion in the chain depends not only on the chosen parameters of the chain, but also on the initial distribution of the charge along the chain. It is shown that for a small set value of the electric field intensity and for fixed values of the chain parameters, changing only the initial distribution of the charge in the chain, it is possible to observe either a uniform movement of the charge along the chain, or an oscillatory mode of charge movement.